When I ground out my first knife it was double high carbon steel and when I was dipping to cool it there was rust forming.I remembered seeing pics of japanese makers with blades sitting in what looked like anti-freeze.So I stopped grinding and ran to pep boys to get two gals of RV coolant to mix in my 5 gal bucket.I have not had any rust issues doing carbon ever since.Has anybody else used coolant in a dip bucket??

tk59

02-22-2012, 11:09 AM

Haha. That's not a bad idea! I can't say I've had major problems though. I only see rust in the rough grinding stage, really. As I get close to finishing, I don't see much discoloration at all.

Marko Tsourkan

02-22-2012, 11:11 AM

I add backing soda to the water. For that matter, I add backing soda to my stone pool as well, as I change water about once a couple of weeks in the shop.

M

PierreRodrigue

02-22-2012, 05:24 PM

Yeah, been useing coolant for some time now.

DeepCSweede

02-22-2012, 05:47 PM

Yeah, been useing coolant for some time now.

Shoot Pierre - I'm surprised your coolant isn't frozen half the year.

PierreRodrigue

02-22-2012, 05:52 PM

its called anti-freeze up here!

Mike Davis

02-28-2012, 11:14 AM

I use a combination of baking soda and dishsoap in my dip bucket. The dishsoap breaks the surface tension of the water and allows the gunk to sink easily so it doesn't form a thick "skin" on the surface of the water. What i didn't say is my dip bucket sits about 3 inches under my grinder and collects junk. I need to get two separate, and the anti freeze thing will happen also...great idea.

Bishopmaker

03-09-2012, 03:00 AM

I never used anti-freeze just the baking soda but might give it a try!

l r harner

03-09-2012, 09:58 AM

i woudl be learry of antifreeze on my hands most the day
i use baking soda

Pabloz

03-09-2012, 12:28 PM

i woudl be learry of antifreeze on my hands most the day
i use baking soda

+1 http://en.wikipedia.org/wiki/Ethylene_glycol_poisoning

Given that this is a hydrocarbon, absorption through the skin also occurrs at differing rates based on location of bodily contact. If I remeber correctly absorption through the skin at the hands is approx. 7-10%. This would also be compounded by vapors generated when heated off the surface of the blade that would then be addition injestion through inhilation. I wouldn't do it.